Shared Derived Traits

Shared derived traits

A) are shared only by common ancestors.
B) are shared by all organisms on the cladogram.
C) are found within members of the outgroup.
D) are homologies found only in certain members of the ingroup.
E) are homologies found between the ingroup and the outgroup. Shared derived traits are homologies that are shared only by certain species within the ingroup. They are found only within members of the ingroup that share a common lineage. Species that arose earlier may not possess the shared derived trait but are nonetheless part of the same clade. Shared derived traits are used to determine which members of the clade belong on the same branch of the cladogram.